Table 1.
Overall median proportion estimates and population-averaged proportion estimates with 95% confidence intervals in the two meta-analyses on chorioamnionitis and on depression or depressive symptoms.
| Method | Overall median proportion, % [95% bootstrap CI] (95% CI) | Population-averaged proportion, % [95% bootstrap CI] |
|---|---|---|
| Meta-analysis on chorioamnionitis | ||
| Generalized linear mixed model: | ||
| Log link | 3.27 [2.12, 4.97] (2.11, 5.05) | 5.32 [3.06, 8.31] |
| Logit link | 3.33 [2.14, 5.11] (2.13, 5.17) | 5.17 [3.05, 7.77] |
| Probit link | 3.54 [2.27, 5.53] (2.21, 5.48) | 5.11 [3.07, 7.62] |
| Cauchit link | 2.41 [1.69, 3.55] (1.80, 3.64) | 11.34 [5.96, 16.10] |
| Complementary log-log link | 3.30 [2.13, 5.05] (2.12, 5.11) | 5.22 [3.06, 7.96] |
| Two-step method: | ||
| Log transformation | 3.39 [2.20, 5.21] (2.21, 5.21) | 5.41 [3.16, 8.38] |
| Logit transformation | 3.45 [2.22, 5.31] (2.22, 5.32) | 5.25 [3.14, 7.82] |
| Arcsine transformation | 4.13 [2.56, 6.28] (2.49, 6.16) | 5.16 [3.14, 7.55] |
| Double-arcsine transformation at | ||
| harmonic mean of sample sizes = 664 | 4.14 [2.58, 6.30] (2.50, 6.17) | 5.15 [3.15, 7.54] |
| geometric mean of sample sizes = 17,358 | 4.21 [2.65, 6.36] (2.57, 6.24) | 5.22 [3.21, 7.60] |
| arithmetic mean of sample sizes = 1,207,998 | 4.21 [2.66, 6.36] (2.57, 6.24) | 5.22 [3.21, 7.60] |
| inverse of variance = 459 | 4.11 [2.55, 6.27] (2.47, 6.14) | 5.13 [3.12, 7.51] |
| Meta-analysis on depression or depressive symptoms | ||
| Generalized linear mixed model: | ||
| Log link | 20.12 [12.59, 35.06] (11.93, 33.94) | 24.61 [13.04, 40.35] |
| Logit link | 21.53 [12.65, 37.01] (11.71, 36.20) | 24.71 [13.04, 38.42] |
| Probit link | 22.15 [12.72, 37.34] (11.67, 36.60) | 24.82 [13.03, 38.38] |
| Cauchit link | 18.05 [11.93, 32.21] (11.75, 33.82) | 23.95 [12.68, 37.33] |
| Complementary log-log link | 20.82 [12.62, 36.17] (11.83, 35.12) | 24.50 [13.04, 38.57] |
| Two-step method: | ||
| Log transformation | 20.39 [12.76, 35.35] (12.14, 34.22) | 24.84 [13.22, 40.61] |
| Logit transformation | 21.70 [12.78, 37.14] (11.87, 36.30) | 24.83 [13.18, 38.50] |
| Arcsine transformation | 23.10 [12.82, 37.77] (11.58, 37.16) | 25.02 [13.04, 38.51] |
| Double-arcsine transformation at | ||
| harmonic mean of sample sizes = 231 | 23.12 [12.85, 37.78] (11.59, 37.15) | 25.01 [13.07, 38.51] |
| geometric mean of sample sizes = 266 | 23.14 [12.87, 37.79] (11.61, 37.16) | 25.03 [13.09, 38.52] |
| arithmetic mean of sample sizes = 311 | 23.15 [12.89, 37.80] (11.63, 37.17) | 25.04 [13.11, 38.52] |
| inverse of variance = 41 | 22.60 [12.13, 37.54] (10.85, 36.90) | 24.55 [12.36, 38.29] |